CN100405832C - TV set apparatus capable of simultaneously receiving and playing multi-channel programs - Google Patents

TV set apparatus capable of simultaneously receiving and playing multi-channel programs Download PDF

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CN100405832C
CN100405832C CN 200410077546 CN200410077546A CN100405832C CN 100405832 C CN100405832 C CN 100405832C CN 200410077546 CN200410077546 CN 200410077546 CN 200410077546 A CN200410077546 A CN 200410077546A CN 100405832 C CN100405832 C CN 100405832C
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audio
output
digital
multi
circuit
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CN1791198A (en
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帅以国
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Tcl王牌电子(深圳)有限公司
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Abstract

本发明是一种实现可同时接收播放多套节目的电视机装置,其设置有多个数字高频头、多路数字音视频解码电路、多路音视频信号处理及输出电路,多路音频输出切换控制电路,多路音视频信号处理及输出电路还连接显示屏,向显示屏输出多路视频信号,让至少两套以上的视频信号同时在一台大屏幕高清晰数字电视机显示屏上显示,而相应的伴音信号则经由多路音频输出切换控制电路输出到喇叭或者有线/无线耳机上。 The present invention may be implemented is a television apparatus receive broadcast simultaneously multiple programs, which is provided with a plurality of digital tuner, a digital multi-channel audio and video decoding circuit, multiple audio and video signal processing and output circuit outputs multi-channel audio the switching control circuit, multiple audio and video signal processing circuit is further connected to an output display, the output multiplex video signal to the display screen, so that at least two or more video signals to be displayed on a big-screen high-definition digital television display, while the corresponding audio signal is multi-channel audio output via the switching control circuit outputs to the speaker or a wired / wireless headset. 本发明可以让两个以上的用户在同一台电视机上同时欣赏不同的电视节目,且视频信号和伴音信号并不互相构成影响,方便家庭的使用和多用户的不同需求。 The present invention allows two or more users to simultaneously enjoy different TV programs on the same TV, and the video signal and audio signal shall not affect each other, easy to use multi-family and the different needs of users.

Description

一种实现可同时接收播放多套节目的电视机装置技术领域本发明涉及电视机的接收处理装置,更具体地说,它是一种利用一台电视机接收多套电视节目信号并且在同一显示屏上同时显示多套电视节目图像的装置, 该装置可利用该电视机的扬声器和耳机同时接收播放多套电视节目。 Player can receive an implementation of multiple programs television TECHNICAL FIELD The present invention relates to a television reception processing apparatus, and more particularly, it is a use of a television receiver sets and display television signals in the same means sets the television program images simultaneously on-screen display, the device can utilize the television speakers and headphones play simultaneously receiving multiple sets of TV programs. 背聚技术目前很多模拟电视机具有画中画功能,用户可以在收看某一套节目时通过画面监视另一套节目,画中画的两个画面分为主画面和从画面,只有主画面有伴音输出,而从画面没有伴音输出,因此不能供两个以上的人同时收看不同的电视节目。 Poly Art back many analog TV having a PIP function, the user can monitor another set of programs while viewing the screen through a set of programs, the PIP sub-screen of the main picture and two from the screen, only the main picture has audio output, audio output from the screen is not human, and therefore can not watch for more than two different TV programs at the same time. 同样的,带画外画功能的数字电视机也存在同样的缺点。 Similarly, with the PBP function of digital television there are the same drawbacks. 随着大屏幕高清晰度显示技术的发展,使在同一台电视上以较高质量显示几套电视节目成为可能。 With the large-screen high-definition display technology, so that a higher quality display several television programs made possible on the same TV. 如一台61英寸的DLP背投电视,其可显示面积的四分之一就比现有29英寸的电视机的可显示面积大,分辨率也较后者为高。 If a 61 'rear projection DLP TV, which can be displayed on a quarter of the area than the existing 29-inch TV can display area, resolution is also higher than the latter. 因此如果按照现有的29英寸的电视机屏幕比较,在61英寸的DLP背投电视上同时显示4 套电视节目,每一套的显示效果都优于现有29英寸电视机的显示效果。 Therefore, if the comparison in accordance with the existing 29-inch TV screen, displaying 4 sets of TV programs in the 61-inch DLP rear projection televisions, each set of display is superior display has 29 inch TV. 所以在实际的应用中单纯用一台电视机观看一个频道虽然具有好的观赏效果,但在资源上是一种浪费;而且依据目前家庭使用电视机的情况, 一个家庭每个人基本上都有不同的观赏需求,电视机就要求符合不同口味人的需要和使用条件,而现有的电视机是不具备的。 So simply using a TV to watch one channel while having a good viewing, but it is a waste of resources on the practical applications; and based on the current situation of domestic TV's, a family basically everyone has a different demand viewing, the TV requires compliance with the needs and tastes of different conditions, and existing TV set is not available. 另一方面,数字电视技术和集成电路技术的发展,在单芯片上实现多路TS 流并行处理,多套数字电视信号并行解码,多路音视频信号并行处理及输出成为可能。 On the other hand, the development of digital television technology and integrated circuit technology, implemented on a single chip multi-channel TS stream parallel processing, several sets of parallel decoding digital television signals, multi-channel audio and video signal processing and output in parallel becomes possible. 从家庭使用及经济的角度考虑,需要用一台电视机在同一时间满足多个消费者的观赏要求,也需要有能够同时播放多个电视机节目的装置,以能够同时满足上述的需要。 From home use and economic point of view, we need a TV at the same time meet more consumers viewing requirements, but also need to have devices capable of playing multiple TV programs at the same time, in order to be able to meet the needs described above. 发明内容本发明的目的是克服现有技术的不足,提供一种在一台电视机上同时收看两套以上的电视节目的实现可同时接收播放多套节目的电视机装置,该装置可同时接收播放两套以上电视节目的声音和图像,并且互不干扰。 Object of the present invention is to overcome deficiencies of the prior art, there is provided a two or more is achieved while watching a television program on a television can receive TV playback apparatus of multiple programs, the receiving apparatus can simultaneously play two or more TV programs sounds and images, and interfere with each other. 本发明的另一个目的是提供一种实现可同时接收播放多套节目的电视机装置,该装置可同时兼容多个频道的接收、播放,观看方便,各个节目之间互相不干扰,且制作成本低廉。 Another object of the present invention may be implemented to provide a television apparatus receive broadcast simultaneously multiple programs, compatible with the device may receive a plurality of channels, playing, viewing convenience, individual programs do not interfere with each other, and the production costs low. 本发明的思路是利用数字电视TS流中一般包含多套电视节目的特点,在只有一个数字高频头的情况下利用画中画功能同时收看收听多套电视节目。 Idea of ​​the present invention is to utilize the characteristics of digital TV stream TS typically comprises a plurality of sets of TV programs using the PIP function only in the case of a digital tuner sets while viewing a television program. 在此基础上利用两个数字高频头就可以实现在所有的节目中任意选择两套节目同时收看。 On this basis, the use of two digital tuner can be achieved in all the selected two programs while watching any program. 加上本发明所述的伴音处理方法及电路,可真正实现一台电视机具有多台电视机的播放功能和效果。 And a circuit coupled to the audio processing method of the present invention, can realize a television set with a playback function and effect of multiple TVs. 本发明是按照下述的方式实现的:一种实现可同时接收播放多套节目的电视机装置,其设置有多个数字高频头、多路数字音视频解码电路、多路音视频信号处理及输出电路,多路音频输出切换控制电路,上述的多个数字高频头并联于多路数字音视频解码电路,多路数字音视频解码电路依次连接有多路音视频信号处理及输出电路、多路音频输出切换控制电路,同时,多路音视频信号处理及输出电路还连接显示屏,向显示屏输出多路视频信号,让至少两套以上的视频信号同时在一台大屏幕高清晰数字电视机显示屏上显示,而相应的伴音信号则经由多路音频输出切换控制电路输出到喇叭或者有线/无线耳机上。 The present invention is implemented in the following manner: an implementation means can simultaneously receive broadcast television of multiple programs, which is provided with a plurality of digital tuner, a digital multi-channel audio and video decoding circuit, multiple audio and video signal processing and an output circuit, multi-channel audio output switching control circuit, said plurality of parallel digital tuner to a multi-channel digital audio and video decoding circuit, a multi-channel digital audio and video decoding circuit in turn connected to multiple audio and video signal processing and output circuit, multi-channel audio output switching control circuit, at the same time, multi-channel audio and video signal processing and output circuit is also connected to the display, the output multiplex video signal to the display screen, so that at least two sets of video signals simultaneously in a large-screen high-definition digital television is displayed on the display unit, while the corresponding audio signal via the multi-channel audio output switching control circuit outputs to the speaker or a wired / wireless headset. 使用具有本发明装置的电视机,可以让两个以上的用户在同一台电视机上同时欣赏不同的电视节目,且视频信号和伴音信号并不互相构成影响,方便家庭的使用和多用户的不同需求。 Using a TV with a device of the invention allows two or more users to simultaneously enjoy different TV programs on the same TV, and the video signal and audio signal shall not affect each other, easy to use and multi-family needs of different users . 所述的实现可同时接收播放多套节目的电视机装置,其多路音频输出切换控制电路是可控电子开关集成电路。 The implementation can simultaneously receive broadcast television apparatus of multiple programs, which multi-channel audio output switching control circuit is a controllable electronic switch IC. 其中的每两个开关一组,组内的两个输入端并联联结, 一路解码后的数字音频信号同时加到并联的输入端:这个组的一个开关的输出端同另一组的一个开关的输出端并联,再联结到一路数模转换器DAC, 由DAC将数字音频信号转换为模拟音频信号的:每个开关的控制端是独立的, 分别接受主CPU发来的控制信号的控制,将输入信号接向用户指定的输出端。 Wherein each of a set of two switches, two input terminals in the group parallel connection, all the way to the decoded digital audio signal is simultaneously applied to the input in parallel: a switch with the other set of switch output terminal of the group an output terminal connected in parallel, and then coupled to a digital to analog converter DAC way, an analog audio signal by the DAC to convert the digital audio signal: the control terminal of each switch are independent, were treated with control of the main CPU of a control signal sent by the the input signal is connected to a user specified output terminal. 上述的电子开关集成电路通常所采用的是两路数字开关,音频信号同时通过这两个数字开关,即由音频解码电路输出的两套I2S音频信号I2S1和I2S2被分别联结到数字开关1和数字开关2。 In the electronic switch integrated circuit is commonly used digital two-way switch, an audio signal simultaneously through the two digital switch, i.e., are respectively joined by two sets I2S1 I2S audio signal and the audio decoding circuit I2S2 to the digital output and a digital switch 1 2 switch. 数字开关1和数字开关2各有8个开关,分成两组。 A digital switch and a digital switch 8 switches 2 each, divided into two groups. 输入端两组并联,输出端两组分别接到第一路音频DAC电路和第二路音频DAC电路。 Two sets of parallel input terminals, two output terminals respectively connected to a first audio and second audio DAC circuit DAC circuit. 每组开关的控制端是独立的,分别接受主CPU发来的控制信号的控制,将输入信号接向用户指定的输出端,进行音频DAC转换然后可控制地输出到喇叭或耳机。 The control terminal of each switch are independent, they were treated with control of the main CPU of the control signal sent from the input signal is connected to a user specified output audio DAC converter may then control the output to the speakers or headphones. 所述的实现可同时接收播放多套节目的电视机装置,其多路数字音视频解码电路和多路音视频信号处理及输出电路及电视机的微处理器(CPU)可集成于一起,形成统一的信号处理模块,方便电路的设置。 The implementation can simultaneously receive broadcast television apparatus of multiple programs that multi-channel digital audio and video decoding circuit and a multi-channel audio and video signal processing and output circuit of a television and a microprocessor (CPU) may be integrated together to form a uniform signal processing modules to facilitate the setting circuit. 而且,所述的实现可同时接收播放多套节目的电视机装置,因为电视机本身自带有音箱和喇叭,其有线或无线耳机配备的数量与多路音频输出切换控制电路之输出路数相同或减少一路。 Also, the implementation can receive a television playback device multiple programs, because the television itself comes with speakers and speakers, the number of wired or wireless headset is equipped with a multi-channel audio output switching large ones of the same output control circuit or reduce all the way. 本发明的主要内容是在一台大屏幕高清晰数字电视机上同时接收多套电视节目的方法。 The main contents of the present invention is a receiving sets a television program on a large-screen high-definition digital television methods simultaneously. 而核心内容是多路电视伴音信号输出切换处理方法。 The core of the TV signal is an audio processing method of the multiplexer. 该方法保证让任意一路伴音信号可以输出到任意喇叭或者有线/无线耳机上。 The method of any way to ensure that the audio signal may be output to a speaker or any wired / wireless headset. 伴音输出选择与控制由用户通过遥控器和0SD菜单实现。 Audio output selection control implemented by a user through a remote controller and 0SD menu. 在使用时,可根据情况的不同将电视机分普通模式和多用户模式。 In use, according to different situations of the TV sub-normal mode and a multi-user mode. 普通模式下它就是一台普通电视机,不开启多个高频头及多路音视频信号解码电路,只有一个高频头进行工作,但可以将伴音切换到耳机上。 It is the normal mode a normal TV, the tuner is not turned on and the plurality of multi-channel audio and video signal decoding circuit, to work only one tuner, but the sound can be switched to the headset. 多用户模式下则启动本发明的装置,可供多人同时观看不同的电视节目。 Multi-user mode starting device of the invention is, for many people to watch different television programs simultaneously. 在多用户模式下,视频显示以POP 为主,也可以是PIP,由用户确定。 In multi-user mode, the main video display with POP, the PIP may be, determined by a user. 本发明与现有技术相比具有如下的有益效果:本发明在原有的电视机中并联设置多个高频头,并通过特有的处理电路,将音频、视频信号分开处理并输出,可从多个界面和音频输出通道进行接收,使得用户能够在同一电视机显示屏下同时收看多个不同的电视频道,且这些频道的音频和视频之间互相不会形成影响。 The present invention and the prior art has the following beneficial effects compared: the present invention is disposed in parallel in a plurality of original TV tuner, a specific processing circuit via the separate audio processing, and outputs a video signal, from multiple and an interface for receiving audio output channels, enabling the user to simultaneously watch a plurality of different TV channels at the same television screen, and affect each other is not formed between the audio and video channels. 而且,本发明的制作成本低廉,便于大屏幕电视机进行设置,尤其适合于家庭使用。 Moreover, low production cost of the present invention to facilitate the large-screen TV set, especially for home use. 附圉说明图1是可同时当多台电视机使用的数字电视机原理图,图2 (A)、 (B)、 (C)、 (D)是在同时接收多套电视节目时屏幕分割示意图,图3是两套电视节目时伴音输出切换示意图,图4是可同时收看两套电视节目的电视机实例。 1 is attached yuzhen simultaneously when the digital television using multiple TVs diagram of FIG. 2 (A), (B), (C), (D) is a schematic view when the screen division multiple sets of received television programs simultaneously FIG 3 is a television program audio output switching two schematic, FIG. 4 is an example of a TV with two television programs simultaneously. 具体实施方式为了便于叙述,下面以可同时接收2套电视节目的电视机为例来加以说明。 DETAILED DESCRIPTION To facilitate the description, in the following two sets of TV programs can be received while the TV, for example to be described. 图1是可以同时接收2套电视节目的电视机示意图。 Figure 1 is a television receiver 2 sets of TV shows a schematic simultaneously. 由两套包括数字解调制部分的数字高频头(数字高频头1和数字高频头2),多路解复用,多路音视频解码,多路音视频处理,主控CPU,音频输出切换控制电路,喇叭或者有线/无线耳机大屏幕高分辨率显示屏组成。 It consists of two digital tuner (digital tuner and a digital tuner 1 2) includes a digital demodulation section, a demultiplexing, multi-channel audio and video decoding, multi-channel audio and video processing, host CPU, audio output switching control circuit, a speaker or a wired / wireless headset high-resolution large-screen display composed. 由数字高频头经过解调制输出的传输流(TS流)数据,被送到传输流处理器进行多路解复用,由解复用所选出的信号数据被送去分别进行音、视频解码, 解码出来的视频数据经过逐行/定标(Deinterlace/Scaler)处理,然后与其它的数字视频或图像信号叠加形成合成视频信号,最后将合成视频信号输出到显示模块完成图像显示。 (TS stream) by the digital tuner data over the transport stream demodulated output is supplied to transport stream processor multiplexes demultiplexed by the demultiplexing signal data is sent to the selected respectively audio and video decoding, the decoded data is subjected to progressive video / scaler (Deinterlace / scaler) process, then a composite video signal or other digital video image signal is superimposed, and finally the composite video signal is outputted to the display module to complete the image display. 这一系列处理都是数字电视的成熟技术。 The series of processes are mature technologies of digital TV. 而解码出来的数字音频信号则要经过本方案特有的音频输出切换控制电路(如图3所示),按照用户指令送到相应的音频DAC和功放电路,最后将声音输出到喇叭或有线/无线耳机播出伴音。 The decoded digital audio signal of the program will have to undergo the specific audio output switching control circuit (FIG. 3), according to a user instruction corresponding to the DAC and audio amplifier circuit, and finally to output sound to the speaker or a wired / wireless headphone audio broadcast. 电视机屏幕分割的几种情况如图2所描述,图2 (A) 、 (B) 、 (C) 、 (D) 分别描述了两套16: 9电视节目屏幕分割、两套4: 3电视节目屏幕分割、 一套16:9电视节目和一套4: 3电视节目屏幕分割、四套电视屏幕分割的示意图。 Several cases of dividing the TV screen as described in FIG. 2, FIG. 2 (A), (B), (C), (D) depict two sets of 16: 9 TV program screen split, two sets of 4: 3 TV segmentation program screen, a 16: 9 television program and a 4: 3 TV screen division program, a schematic diagram of four sets of split television screen. 图3是针对两套电视节目时伴音输出切换示意图,图中所示,由音频解码电路输出的两套电视节目的伴音信号节目一伴音(12S1)和节目二伴音(I2S2)被分别联结到数字开关1和数字开关2。 FIG. 3 is for a two television programs audio output switching diagram shown in the drawings, consists of two television program audio decoding circuit outputs a program audio signal of a sound (12S1) and two audio programs (I2S2) are respectively coupled to the digital 1 and the digital switch 2 switches. 数字开关1和数字开关2各有8个开关, 分成两组。 A digital switch and a digital switch 8 switches 2 each, divided into two groups. 它们的输入端两组并联,输出端两组分别接到第一路音频DAC电路和第二路音频DAC电路。 Two input terminals thereof connected in parallel, respectively, to the first output of the two-channel audio and a second audio DAC circuit DAC circuit. 每组开关的控制端是独立的,分别接受主CPU发来的控制信号的控制,将输入音频信号接向用户指定的输出端,进行音频DAC转换然后可控制地输出到嘲叭或耳机。 The control terminal of each switch are independent, they were treated with control of the main CPU of the control signal sent to the input audio signal is connected to a user specified output audio DAC converter may then control the output to ridicule or pair of headphones. 主CPU接到遥控指令后按下面的控制逻辑表来控制音频信号的输出。 The main CPU after receiving the remote command by the control logic of the following table to control the output of the audio signal. 其切换的控制逻辑表如下:音頻信号切换控制逻辑表 <table>table see original document page 7</column></row> <table>其他控制信号组合禁止 * 0表示无音频输出,1表示输出第一套节目的伴音,2表示输出第二套节目的 伴音 该电路可以将两套电视节目伴音信号中任一套送到任一路DAC电路。 The control logic table which switch is as follows: an audio signal switch control logic table <table> table see original document page 7 </ column> </ row> <table> other control signal combination inhibition * 0 indicates no audio output, 1 represents the output of an audio program, the second program audio output 2 represents the circuit of a television program may be two audio signals to any one of the way to any of a DAC circuit. 再由图4可见,本具体实施采用两个CU1216 PHILIPS —体化DVB-C数字高频头, 一颗ATI XilleonX226高清数字电视芯片,配接61" DLP背投显示器,配有两套音频电路。XilleonX226具有强大的解码能力,可以同时解两路高清电视信号或8路标清电视信号。经XilleonX226解码的一路或多路视频信号经处理后送DLP显示。而经Xilleon X226解码的一路或多路音频信号由两个12S 口输出,经音频输出控制电路,将任一路伴音信号送到指定的音频电路输出。音频输出控制电路主要由两片PI3C3224和主CPU共同完成。其工作方式前面已有描述,这里不再赘述。在一般情况下,该多用户电视机处在普通模式下,与普通电视机并无差别。在多用户模式下,由用户通过遥控器控制多套视频节目的显示方式和音频输出方式。在具体实施中采用了如图2 (A)、图2 (B)和图2 (C)所示的屏幕分割方式。具体选择由节 Then seen from Figure 4, the present embodiment uses two specific CU1216 PHILIPS - form of DVB-C digital tuner, a high-definition digital TV chip ATI XilleonX226, mating 61 "DLP rear projection displays, with two sets of audio circuit. XilleonX226 a powerful decoding capabilities can be solved at the same time two-way high-definition television signal or 8 standard definition television signals. XilleonX226 display decoded by one or more channels of video signal processing evacuation DLP. Xilleon X226 and decoded by one or more channels of audio 12S signal output from the two ports, a control circuit via the audio output, the audio signal is any way to the specified audio circuit output. the audio output control circuit mainly consists of two PI3C3224 together and complete the main CPU. foregoing mode of operation which has been described, not repeated here. in general, the plurality of user television set in the normal mode, the normal TV and no difference in the multi-user mode, control the display of audio and video program sets by a user through a remote controller output. in a specific embodiment employed in the FIG. 2 (a), FIG. 2 (B) and 2 (C) shown in split screen mode. DETAILED selected by the section 目信号和用户确定。图中视频1和视频2的面积大于29"电视机可视部分面积。 And determining the user entry signal. FIG. 2 video 1 and the video area is larger than 29 "TV visible part of the area. 观看两套节目时效果很好。 It works well when viewing two programs. 充分利用数字电视的技术优点, 在屏幕区间3/屏幕区间4显示电子节目指南EPG信息等。 Make full use of the advantages of digital television technology, 3/4 range display screen electronic program guide (EPG) information on the screen range. 在视频节目带字幕信息时,在屏幕区间3/屏幕区间4显示字幕信息。 When video program information with subtitles, section 3 of the screen / screen display section 4 caption information. 音频输出方面,两套节目都输出左右立体声。 Audio output, two programs are left and right stereo output. 一路由扬声器或耳机输出,另一路由红外无线耳机输出。 All the way from the speaker or headphone output, another route infrared wireless headphone output. 通常情况下扬声器对使用耳机者无明显干扰。 The use of headphones were not significantly interfere with the speakers normally. 对特别敏感用户,可全部采用耳机输出。 Particularly sensitive to the user, can all use the headphone output. 原则上讲,只要显示屏足够大分辨率足够高(如61"DLP),可以让一台电视机同时接收多套电视节目,而大多数情况下一台电视机供2人同时使用就够了,如在一台电视机上丈夫看足球,妻子看连续剧,互不干扰。同时还可实现音频输出的切换控制,使一套节目的声音通过喇叭/耳机输出,其他节目的声音通过耳机输出,相互之间可通过遥控器切换,当然最好是都通过耳机输出,这样音频的干扰就不存在。 In principle, as long as the display is large enough high enough resolution (such as 61 "DLP), allows a TV simultaneously receive multiple sets of TV shows, but in most cases the next TV for 2 people simultaneously is enough as husband watching on a television football, wife watching soap operas, without disturbing each other. at the same time also enables switching control audio output, the sound of a program by the speaker / headphone output, other programs of sound through the headphone output, each other between switchable by remote control, of course, preferably through the headphone output, so that there is no audio interference.

Claims (5)

1. 一种实现可同时接收播放多套节目的电视机装置,其特征在于其设置有多个数字高频头、多路数字音视频解码电路、多路音视频信号处理及输出电路,多路音频输出切换控制电路,上述的多个数字高频头并联于多路数字音视频解码电路,多路数字音视频解码电路依次连接有多路音视频信号处理及输出电路、多路音频输出切换控制电路,同时,多路音视频信号处理及输出电路还连接显示屏,向显示屏输出多路视频信号,让至少两套以上的视频信号同时在一台大屏幕高清晰数字电视机显示屏上显示,而相应的伴音信号则经由多路音频输出切换控制电路输出到喇叭或者有线/无线耳机上。 An implementation can simultaneously receive broadcast television apparatus of multiple programs, characterized in that it is provided with a plurality of digital tuner, a digital multi-channel audio and video decoding circuit, multiple audio and video signal processing circuit and an output, the multiplexer audio output switching control circuit, said plurality of parallel digital tuner to a multi-channel digital audio and video decoding circuit, a multi-channel digital audio and video decoding circuit in turn connected to multiple audio and video signal processing circuit and an output, multi-channel audio output switching control circuit, simultaneously, multiple audio and video signal processing circuit is further connected to an output display, the output multiplex video signal to the display screen, so that at least two or more video signals to be displayed on a big-screen high-definition digital television display, while the corresponding audio signal is multi-channel audio output via the switching control circuit outputs to the speaker or a wired / wireless headset.
2.如权利要求1所述的实现可同时接收播放多套节目的电视机装置,其特征在于其多路音频输出切换控制电路是可控电子开关集成电路,其中的每两个开关一组,组内的两个输入端并联联结, 一路解码后的数字音频信号同时加到并联的输入端;这个组的一个开关的输出端同另一组的一个开关的输出端并联,再联结到一路数模转换器DAC,由DAC将数字音频信号转换为模拟音频信号的;每个开关的控制端是独立的,分别接受主CPU发来的控制信号的控制,将输入信号接向用户指定的输出端。 2. The implement according to claim 1 can receive a television playback device multiple programs, characterized in that multi-channel audio output switching control circuit is a controllable electronic switch integrated circuit, each of which is a set of two switches, two input terminals coupled in parallel within the group, all the way to the decoded digital audio signal is simultaneously applied to the input in parallel; a switch with the output of the other set of switch output terminal of the group in parallel, and then coupled to a number of way analog converter DAC, a DAC converts the digital audio signal into an analog audio signal; a control terminal of each switch are independent, were treated with control of the main CPU of the control signal sent from the input signal is connected to a user specified output terminal .
3.如权利要求2所述的实现可同时接收播放多套节目的电视机装置,其特征在于上述的电子开关集成电路通常所采用的是两路数字开关,音频信号同时通过这两个数字开关,即由音频解码电路输出的两套I2S音频信号I2S1和I2S2被分别联结到数字开关1和数字开关2,数字开关1和数字开关2各有8个开关,分成两组,输入端两组并联,输出端两组分别接到第一路音频DAC电路和第二路音频DAC电路,每组开关的控制端是独立的,分别接受主CPU发来的控制信号的控制,将输入信号接向用户指定的输出端,进行音频DAC转换然后可控制地输出到喇叭或耳机。 3. The implement according to claim 2 can simultaneously receive broadcast television apparatus of multiple programs, wherein said electronic switch integrated circuit is commonly used digital two-way switch, an audio signal simultaneously through the two digital switch that are respectively joined by two sets I2S1 I2S audio signal output from the audio decoding circuit to the digital switch and I2S2 figures 1 and switch 2, a digital switch and a digital switch 8 switches 2 each, divided into two groups, two parallel input , two output terminals respectively connected to a first circuit and a second audio channel audio DAC DAC circuit, control terminal of each switch are independent, they were treated with control of the main CPU of the control signal sent to the input signal is connected to a user specified output audio DAC converter may then control the output to the speakers or headphones.
4.如权利要求1所述的实现可同时接收播放多套节目的电视机装置,其特征在于其多路数字音视频解码电路和多路音视频信号处理及输出电路及电视机的微处理器(CPU)可集成于一起,形成统一的信号处理模块。 Implement as claimed in claim 1 characterized in that the microprocessor multi-channel digital audio and video decoding circuit and a multi-channel audio and video signal processing circuit and the television and the output requirements can receive a television playback device multiple programs, (CPU) may be integrated together to form a unified signal processing module.
5.如权利要求1所述的实现可同时接收播放多套节目的电视机装置,其特征在于其有线或无线耳机配备的数量与多路音频输出切换控制电路之输出路数相同或减少一路。 5. The implement according to claim 1 can receive a television playback device multiple programs, characterized in that it the number of wired or wireless headset is equipped with the same multi-channel audio output switching of the output control circuit to reduce the large ones or all the way.
CN 200410077546 2004-12-17 2004-12-17 TV set apparatus capable of simultaneously receiving and playing multi-channel programs CN100405832C (en)

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